Cannot run knn query using elasticClient.RequestResponseSerializer about elasticsearch-net HOT 5 OPEN

@giannik There is a very short example in this migration guide document: https://www.elastic.co/guide/en/elasticsearch/client/net-api/current/migration-guide.html#_workarounds_for_missing_features

Deserializing back to the CLR response types is more complex and I currently don't have any read-to-use documentation for that.

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Hi @giannik, You are right, KNN queries are not completeley implemented yet. I can not give you an exact ETA for that, as it currently does not have very high priority.

Besides that, please note, that deserialization of requests is not officially supported (and might not work with some requests). The client usually only serializes requests and deserializes responses. Roundtripping is at best partially implemented 🙂

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@flobernd thanks for the notice.
do you have a recomended generic approach to run queries in the dotnet client based on the json query body given as a string ?
for example easily identify what type of query it is (that derives from base class searchQuery ) from the json string and generically be able to execute the query in dotnet ?

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@giannik This scenario is not directly supported by the client. If you have query payloads in JSON format, I would probably use the low level transport client to send raw requests (you could probably still deserialize the response to the corresponding CLR type).

There is a chance that the KNN query deserialization might work after some code generation improvements I'm currently working on (earliest release in the end of Q1), but I can't promise anything.

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thank you @flobernd .
Can you share any links (docs , examples ) on how to use the low level client in latest dotnet client ?
Yiannis

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